CN107113953B - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
CN107113953B
CN107113953B CN201680003257.XA CN201680003257A CN107113953B CN 107113953 B CN107113953 B CN 107113953B CN 201680003257 A CN201680003257 A CN 201680003257A CN 107113953 B CN107113953 B CN 107113953B
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CN
China
Prior art keywords
user
light source
lighting device
illumination
illumination distribution
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Application number
CN201680003257.XA
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Chinese (zh)
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CN107113953A (en
Inventor
佐藤智纪
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BALMUDA DESIGN Ltd
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BALMUDA DESIGN Ltd
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Publication date
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Priority to CN201810524345.5A priority Critical patent/CN108811275A/en
Publication of CN107113953A publication Critical patent/CN107113953A/en
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Publication of CN107113953B publication Critical patent/CN107113953B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/17—Operational modes, e.g. switching from manual to automatic mode or prohibiting specific operations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/15—Adjustable mountings specially adapted for power operation, e.g. by remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms
    • F21V21/28—Pivoted arms adjustable in more than one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • F21V23/0478—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person by means of an image recording device, e.g. a camera
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G06T7/74—Determining position or orientation of objects or cameras using feature-based methods involving reference images or patches
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
    • G08B21/0438—Sensor means for detecting
    • G08B21/0461—Sensor means for detecting integrated or attached to an item closely associated with the person but not worn by the person, e.g. chair, walking stick, bed sensor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
    • H05B47/125—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by using cameras
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30196—Human being; Person
    • G06T2207/30201—Face
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G06V40/161—Detection; Localisation; Normalisation
    • G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/18—Eye characteristics, e.g. of the iris
    • G06V40/19—Sensors therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Theoretical Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Gerontology & Geriatric Medicine (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The present invention can make to keep appropriately distance between the eyes of user and object, and on illumination appropriate irradiation table.Lighting device has: the light source (62) for irradiating on desk (D)；It is built-in with the arm mechanism (30) of the motor for keeping the position of light source (62) mobile；Detect the face camera (21) of the position of the eyes of user (H)；Detect video camera (63,64) on the table of the Illumination Distribution on desk (D)；Image processing part (120), its be based on the face-image obtained by face camera (21) and the table that is obtained by video camera on table (63,64) on image, the eyes of calculating user (H) to the distance of desk (D) and the posture of user (H)；Operational part (130), its posture for being based on the user (H) found out by image processing part (120) and the Illumination Distribution obtained by video camera on table, calculate the best light source position for making the smallest light source of the variance of Illumination Distribution (62) on the table；The warning portion (140) of warning is generated in the case where distance is specified value situation below；And control unit (110), act arm mechanism (30), so that light source (62) is moved to above-mentioned the best light source position.

Description

Lighting device
Technical field
The present invention relates to a kind of lighting devices, more particularly to can suitably keep user posture and suitably according to Penetrate the lighting device on table.
Background technique
Usually using referred to as so-called " desk lamp (desk light) " lighting device (referring for example to patent document 1~specially Sharp document 3).Such lighting device by user's suitably changing position, be adjusted so that desired position obtain it is appropriate Illumination.
Such desk lamp can carry out various improvement, it is known to be provided in the moving part for changing illumination direction electronic The lighting device of machine (referring for example to patent document 1).Furthermore it is known that having is leading to the focusing of eyes because the age increases or fatigue It adjusts color in the case where adjusting function reduction or controls the lighting device of range of exposures (referring for example to patent document 2).In addition, It it is known that and judge text size or colour/monochrome to adjust the lighting device of light (referring for example to patent document 3).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 04-144002 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2013-125596 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2014-086311 bulletin
Summary of the invention
Problems to be solved by the invention
In above-mentioned lighting device, there are the following problems.That is, the posture for not accounting for user be it is various and when Moment carves changed.When posture changes, the positional relationship between desk or light source also changes.Thus, There is a situation where that the shorter state of the distance between objects such as when user's read books eyes and the books on table is lasting. Then, the ciliary muscle tenses of eyeball, it is possible to become the reason of eyesight reduces.In addition, if the illumination difference increase on table is then right Eyes generate burden, equally also become the reason of eyesight reduces.Also, occurs the shade of stationery or the hand of user on books When, the reading identification of text etc. can become difficult, it is equally possible to eyesight be caused to reduce.In addition, making when illumination on the table is lower User can read eyes close to books etc., so that the distance between eyes and object shorten as described above, it may Eyesight is caused to reduce.
Therefore, the purpose of the present invention is to provide one kind can make to keep appropriate between the eyes of user and object Lighting device on illumination appropriate irradiation table.
Solution to the problem
Goal of the invention is realized to solve the above-mentioned problems, and lighting device of the invention is constituted as follows:
Have: light source is used to irradiate table；Arm mechanism is used to make the position of the light source mobile；Illumination Distribution inspection Unit is surveyed, is used to detect the Illumination Distribution on the table；Operational part, the institute based on Illumination Distribution detection unit detection The Illumination Distribution on table is stated, the even light source position of uneven illumination can be reduced by calculating；Arm control unit carries out the arm mechanism Movement, so that the light source is moved to the calculated light source position of the operational part.
Invention effect
In accordance with the invention it is possible to make to keep appropriately distance between the eyes of user and object and with photograph appropriate On degree irradiation table.
Detailed description of the invention
Fig. 1 is the solid for showing the lighting device of one embodiment of the present invention and being provided with the desk of lighting device Figure.
Fig. 2 is the perspective view for showing the lighting device.
Fig. 3 is the bottom view for showing the lamp cap of assembling in the luminaire.
Fig. 4 is the block diagram for showing the Sketch of the lighting device.
Fig. 5 is the explanatory diagram for showing the mechanism model of the arm of assembling in the luminaire.
Fig. 6 is the explanatory diagram for showing the elemental motion process of the lighting device.
Fig. 7 is the explanatory diagram for showing the motion flow of model selection of the lighting device.
Fig. 8 be show the eyes of the lighting device between desk at a distance from detection operation explanatory diagram.
Fig. 9 be show the eyes of the lighting device between desk at a distance from detection operation explanatory diagram.
Figure 10 is the explanatory diagram for showing the Illumination Distribution testing principle of the lighting device.
Figure 11 is the explanatory diagram for showing the reference axis of light source position of the lighting device.
Figure 12 is the explanatory diagram of the image and illumination histogram before showing the Illumination Distribution improvement of the lighting device.
Figure 13 is the explanatory diagram of the image and illumination histogram after showing the Illumination Distribution improvement of the lighting device.
Description of symbols
10 lighting devices
20 base portions
21 face cameras (user's video camera)
30 arm mechanisms
40 arms
41 first arms
42 second arms
43 elevation angle regulating members
44 yaw components
45 lamp cap mounting portions
50 arm operating members
51 first motor
51a first angle sensor
52 second motor
52a second angle sensor
53 third motor
53a third angle sensor
54 the 4th motor
54a fourth angle sensor
55 the 5th motor
The 5th angular transducer of 55a
56 the 6th motor
The 6th angular transducer of 56a
61 bulb sockets
62 light sources
63, video camera on 64 tables
65 illuminance transducers
100 control devices
110 control units
120 image processing parts
130 arithmetic units
140 warning portions
H user
D desk
Specific embodiment
Fig. 1 is the lighting device 10 for showing one embodiment of the present invention and the desk D for being provided with lighting device 10 Perspective view.Fig. 2 is the perspective view for showing lighting device 10.Fig. 3 is to show looking up for the lamp cap 60 being assembled in lighting device 10 Figure.Fig. 4 is the block diagram for showing the Sketch of lighting device 10.Fig. 5 is the explanatory diagram for showing the mechanism model of arm 40.Fig. 6 It is the explanatory diagram for showing the elemental motion process of lighting device 10.Fig. 7 is the stream of action for showing the model selection of lighting device 10 The explanatory diagram of journey.Fig. 8 be show the eyes of lighting device 10 between desk at a distance from detection operation explanatory diagram.Fig. 9 is to show Out the eyes of lighting device 10 between desk at a distance from detection operation explanatory diagram.Figure 10 is the illumination for showing lighting device 10 It is distributed the explanatory diagram of testing principle.Figure 11 is the explanatory diagram for showing the reference axis of light source position of lighting device 10.Figure 12 is to show The explanatory diagram of image and illumination histogram before the Illumination Distribution of lighting device 10 improves out.Figure 13 shows lighting device 10 The explanatory diagram of image and illumination histogram after Illumination Distribution improvement.In addition, H indicates user in Fig. 1.
Lighting device 10 has: the base portion 20 being positioned on desk D；For the base portion 20 to be fixed on desk D's It is fixed to use fixture 25；Arm mechanism 30, base end side are installed on base portion 20, determine the position of light source 62；And it is arranged in the arm The lamp cap 60 of the front end side of mechanism 30.
Aftermentioned control device 100 is provided in base portion 20.The front side of base portion 20 is provided with facial camera shooting Machine (user's video camera) 21, the face camera 21 detect the privileged site (such as position of eyes) of user H and use The posture of the upper part of the body of person H exports face-image (user images).It is opened in addition, being provided with mode in the upper surface of base portion 20 Close 22.
The arm operating member 50 that arm mechanism 30 has arm 40 and acts the arm 40.
Arm 40 has: being set to the of the rotation of being built in the rotary shaft 23 of base portion 20,1 direction of Xiang Tuzhong arrow α One arm 41；The second arm 42 of the front end side of the first arm 41 is set in the rotatably mounted mode of the axis around horizontal direction；To enclose The mode rotatably mounted around the axis of horizontal direction is set to the elevation angle regulating member 43 of the front end side of the second arm 42；With rotatably mounted Mode be set to the yaw component 44 of the elevation angle regulating member 43；And it is set to the yaw component in a free rotating way 44 lamp cap mounting portion 45.Lamp cap 60 is installed in lamp cap mounting portion 45.
Arm operating member 50 has: be built in base portion 20, make rotary shaft 23 into figure 1 direction of arrow α rotate first Motor 51 and first angle sensor 51a；Make the first arm 41 into figure 2 direction of arrow α rotate the second motor 52 with And second angle sensor 52a；Make the second arm 42 third motor 53 that 3 direction of arrow α rotates into figure and third angle Sensor 53a；Make the 4th motor 54 that 4 direction of arrow α rotates into figure of elevation angle regulating member 43 and fourth angle sensing Device 54a；Make yaw component 44 5 direction of arrow α rotates into figure the 5th motor 55 and the 5th angular transducer 55a；With And make lamp cap mounting portion 45 6 direction of arrow α rotates into figure the 6th motor 56 and the 6th angular transducer 56a.
Arm mechanism 30 acts arm operating member 50, and thus the position to aftermentioned light source 62 and direction of illumination carry out Various controls, such as the best light source position can be moved it to.
Lamp cap 60 has: rectangular bulb socket 61；Be set to the lower surface of the bulb socket 61, for irradiating desk D On light source 62；Be set to 62 side of light source, Illumination Distribution on detection table and export on table video camera 63 on the table of image, 64；And be set to bulb socket 61 upper surface, illuminance transducer 65 for detecting environmental aspect.
Control device 100 has: carrying out Collaborative Control to each portion and controls the control unit 110 of arm 30；With the control The image processing part 120 that portion 110 connects；Arithmetic unit (operational part) 130；And at a distance from eyes are between desk for regulation away from From the warning portion 140 in (threshold value) situation below, given a warning by sound or light to user H.
Image processing part 120 is connect with the output of video camera 63,64 on the output of face camera 21, table, to by face Image is handled and detects user H on the face-image of the acquisition of video camera 21 and the table obtained by video camera 63,64 on table Privileged site (being the eyes of user H herein) position data, calculate user H eyes between desk D distance Q And the posture of user H.
The posture of the upper part of the body of the arithmetic unit 130 based on user H, makes the variance of the histogram of Illumination Distribution on desk D As minimum, thus calculating makes the illumination difference in the shade minimum limit and desk D of user H be minimal light source 62 the best light source position.
Warning portion 140, which has, passes through sound when the distance Q of eyes to the desk D of user H are lower than a reference value (specified value) The function that sound or light are alerted.Specifically, using from loudspeaker warning tones or the flashing of light source 62 etc..
The lighting device 10 constituted like this proceeds as follows use.Following four kinds are for example had in lighting device 10 Mode.That is (M1) standby mode, (M2) calibration mode, (M3) light source position control model, (M4) hubbed mode on hand.These moulds Formula is successively switched as shown in Figure 7 by pressing mode switch 22.
(M1) standby mode
Standby mode is the mode for executing the standby processing of lighting device 10.It is converted after being powered up to standby mode. When staying in standby mode, without the movement of arm mechanism 30 and lighting for light source 62.
(M2) calibration mode
Calibration mode is the mode for carrying out the adjustment of video camera 63,64 on face camera 21 and table.In general, only Once conversion is carried out when powering on for the first time, can be by being arbitrarily operated into calibration mode to calibration mode.Face is taken the photograph The adjustment of video camera 63,64 refers on camera 21 and table, carries out the face of user H, the iconology of the upper part of the body, eyes, hand It practises, and the pixel based on dedicated templates (pattern sheet) calculates the conversion coefficient to length.
(M3) light source position control model
Light source position control model is the light source 62 that lighting device 10 is controlled according to the posture of user H and environmental aspect Position mode.Operation by user H to mode switch is selectively converted to light source position control model.About Control method illustrates below.
(M4) hubbed mode on hand
On hand hubbed mode be by make the light of lighting device 10 be always irradiated to user H on hand in a manner of control Mode.By operating-mode switch 22, hubbed mode on hand is selectively converted to.When staying in hubbed mode on hand, Lighting device 10 identifies the position of the hand of user H by video camera 63,64 on table.Lighting device 10 controls arm mechanism 30, with The hand of user H is set to be moved to the center of the image obtained by video camera 63,64 on table.It is shone around the hand of user H as a result, It penetrates.
By being provided with this four modes, as shown in Figure 6 after powering on beginning, acted by 22 selection of mode switch Mode (M1)~(M4) (ST10).Then, execute selected action mode (M1)~(M4) (ST11), by cut off the power come Terminate.
It is further described, then all switching action mode (M1)~(M4) when pressing mode switch 22 every time.Fig. 7 is shown The motion flow.That is, upon start, whether judgment model switch 22 is pressed (ST20).If be not pressed, continue to Machine mode (M1) (ST21).If be pressed, judge whether to complete calibration (ST30), ST40 is entered if completing.
If not completing calibration, calibration mode (M2) (ST31) is executed, and judge whether normally to perform calibration (ST32), if normally completed, enter ST40.In addition, if not completing, then ST31 is back to.
ST40 is light source position control model (M3).Whether judgment model switch 22 is pressed (ST41), is being pressed it Preceding continuation light source position control model (M3).In the case where being pressed, then enter hubbed mode (M4) (ST50) on hand.
Next, it is determined that whether mode switch 22 is pressed (ST51), continue hubbed mode (M4) on hand before being pressed. Then terminate in the case where being pressed.
In the following, light source position control model is described in detail.In conversion to light source position control model, pass through face The image of the acquisition of portion's video camera 21 user H.The image processing part 120 of lighting device 10 has image identification function, the image Identification function is the Haar-like feature found out using the image for being in advance based on multiple eyes and AdaBoost algorithm and makes Software realization.In addition, also having input the data such as the posture of a large amount of people, the shape of hand, Lai Zhihang image recognition.By by institute The image of acquisition is applied to image processing part 120, seeks the position of the eyes on image.
The position coordinates of eyes are set as Ex, Ey.In addition, the position of face camera 21 is set as the image that can be obtained Lowest part be the height equal with the upper surface part of desk D, therefore the lowest part of image can be adopted as the position of desk D With.Therefore, the height of the eye position detected as described above is used directly as eyes to the distance of desk D.As a result, Think that posture deteriorates when meeting following formula.
Ey < Eth ... (1)
Wherein, Eth is that posture deteriorates warning threshold.
When the posture for detecting user H by arithmetic unit 130 deteriorates, lighting device 10 uses sound by warning portion 140 Sound or light etc. alert user H.
Ex, Ey when face camera 21 identifies the position coordinates of the eyes of user H is shown in Fig. 8 and Fig. 9 Relationship.The position coordinates of eyes are indicated with (Ex, Ey).In addition, posture, which deteriorates warning threshold, is set as Eth=300.Such as Fig. 8 It is shown, in the normal situation of posture of user H, by image procossing obtain eyes position coordinates be (Ex, Ey)= (310,400).As a result, eyes between desk at a distance from be 400, due to be higher than threshold value, because without giving a warning.
On the other hand, as shown in figure 9, passing through the eyes of image procossing acquisition in the case where the posture of user H deteriorates Position coordinates be (Ex, Ey)=(90,260) when, eyes between desk at a distance from be 260, lower than threshold value therefore give a warning.
It is carried out by the end of lighting device 10 based on the current illuminating position observed by illumination sensor 65 in the following, showing To the process that can reduce the mobile control of the even light source position of uneven illumination.
Figure 10 shows Illumination Distribution testing principle.That is, the Illumination Distribution of measurement use environment, seeks the view in user H The presumption Illumination Distribution detected on point position (Hi).Based on presumption Illumination Distribution, calculating can reduce the even light source of uneven illumination Optimum position.
Using the optimum position of light source 62 as target position, the motion profile of the front end of arm mechanism 30 is generated, and is passed through Light source position is moved to optimum position by trajectory track control.
Lighting device 10 measures the Illumination Distribution Ia (i, j) in the plane of desk D using video camera 63,64 on table.Then, The presumption Illumination Distribution Ib on the viewpoint position of user is sought based on following formula.
Ib=RXuIa ... (2)
Wherein, R is the transformation matrix based on Illumination Distribution coordinate system, and Xu is the view space coordinate of user H, and Ia is to shine Degree distribution.The view space coordinate Xu=[x, y, z, θ r, θ p, θ y] of user H is the acquisition image based on face camera 21 Eyeball position is detected by image procossing and detects what the position in longitudinal direction obtained based on depth data.
Using presumption Illumination Distribution Ib, the even lesser light source position of uneven illumination is sought.Therefore, using lighting device 10 Lighting model Im.This be based on bringing which kind of such viewpoint of influence to the Illumination Distribution on currently used person's viewpoint position and Modelling.Illumination Distribution suffered by the end user for considering the lighting model is set as " model consideration illumination point Cloth " is indicated with Ic.Estimate Illumination Distribution Ib and lighting model Im, model considers that the relationship of Illumination Distribution Ic is following formula.
Ic=Ib-Im ... (3)；
In addition, lighting model Im (x, y, z) is following formula.
Im=SXKL+CX ... (4)；
Wherein, S is from light source to the transformation matrix of coordinates of user's viewpoint position, and X is light source position coordinate, and K is model Correction factor matrix, L are the illumination intensity distribution of table top surface, and C is correction term.
In the method, it is believed that the even lesser light source position of uneven illumination refers to that model considers Illumination Distribution no matter at which Position is all uniform.That is, becoming following such light source positions: in histogram H (the n) (illumination for describing model consideration Illumination Distribution Value is to frequency) when taken as a certain value peak value the general shape of the higher curve of sharpness light source position.In order to seek the light source position It sets, the optimization of light source position is carried out using gradient method.Evaluation function at this time is about histogram H (n):
[mathematical expression 1]
Figure GDA0001647340630000081
S, t；n∈Z.
Wherein, m is illumination data number, haIt is illumination average value, hiIt is brightness value, Z is the set of illumination data.This is commented Valence function meaning is to realize the space region in Illumination Distribution with certain luminance by the minimum of the variance of histogram H (n) The maximization in domain.
Figure 11 is the reference axis for showing the light source position of lighting device 10.In light source position control model, by above-mentioned Optimized calculating, the even lesser light source position (xc, yc, zc, θ rc, θ pc, θ yc) of uneven illumination can be obtained.In order to make Light source position becomes (xc, yc, zc, θ rc, θ pc, θ yc), generates the motion track of lamp cap 60 (arm front end), and carries out it and chase after Track control.Make light source 62 mobile to (xc, yc, zc, θ rc, θ pc, θ yc) as a result,.Lighting device 10 is based on observing as a result, Current illuminating position and be moved to optimal light source position, so as to realize the illumination on the even lesser desk D of uneven illumination Environment.In addition, not only can also realize illumination by controlling illumination and the colour temperature of light source 62 itself by control light source position Uneven lesser lighting environment.
Figure 12 and Figure 13 is the image for the improvement process for showing the Illumination Distribution obtained as described above and to the image The explanatory diagram of the histogram of Illumination Distribution obtained from being handled.Namely based on by the image that video camera 63,64 obtains on table, It obtains before improving as the histogram of Illumination Distribution shown in the chart of Figure 12.The variance of histogram is larger, for there are uneven illuminations Even situation.Light source position coordinate at this time is (x, y, z, θ r, θ p, θ y)=(100,200,300,0,0,0).
Then, it by computing device 130, is based on above-mentioned formula (5), calculates without the non-uniform optimal light source position of illumination. The result of calculating for example obtains (xc, yc, zc, θ rc, θ pc, θ yc)=(π/12 of 82,98,312, π/6 ,-π/12,2).Make arm machine Structure 30 is acted and is moved, so that light source 62 is located at the position.Illumination Distribution after movement is Figure 13, and central portion is most bright, With being gone toward periphery and gradually dimmed ideal Illumination Distribution.
As described above, lighting device 10 according to the present embodiment, user H eyes between desk D at a distance from be It is given a warning in specified value situation below, with will not be excessively close at a distance from ensuring the eyes of user H between desk D.This Outside, in the unsuitable situation of Illumination Distribution on desk D, light source 62 can be moved to improve Illumination Distribution, with photograph appropriate On degree irradiation table.Therefore, can prevent the eyesight of user H reduces.
In addition, present invention is not limited to the embodiments described above.About the privileged site shot by face camera, can be The position of the upper part of the body other than eyes, the such as position of ear can predict the position of eye position in this way, and unlimited In eyes.Obviously various modifications can be implemented without departing from the spirit and scope of the invention.

Claims (11)

1. a kind of lighting device, which is characterized in that have:
Light source is used to irradiate table；
Arm mechanism is used to make the position of the light source mobile；
User's video camera detects user；
Video camera on table is used to detect the Illumination Distribution on the table；
Image processing part is connect with the output of video camera on the output of user's video camera, table, based on by user's video camera The user images of acquisition and by the table video camera obtain table on image, calculate the posture of the user；
Operational part, posture based on the user found out by described image processing unit and is obtained by video camera on the table The Illumination Distribution on the table obtained, calculates the light source position that can be reduced uneven illumination；And
Arm control unit acts the arm mechanism, so that the light source is moved to the calculated light of the operational part Source position.
2. lighting device according to claim 1, it is characterised in that:
The operational part calculates the position of the variance reduction of the histogram for Illumination Distribution of sening as an envoy to as the even reduction of uneven illumination Light source position.
3. lighting device according to claim 1, which is characterized in that be also equipped with:
Illuminating position detection unit is used to detect the illuminating position on the table,
The operational part, in addition to being also based on the illuminating position, calculating and can be reduced photograph based on the Illumination Distribution on the table Spend non-uniform light source position.
4. lighting device according to claim 2, which is characterized in that be also equipped with:
Illuminating position detection unit is used to detect the illuminating position on table,
The operational part, in addition to being also based on the illuminating position, calculating and can be reduced photograph based on the Illumination Distribution on the table Spend non-uniform light source position.
5. lighting device according to any one of claims 1 to 4, which is characterized in that be also equipped with:
Position data detection unit detects the privileged site of user based on the user images that user's video camera obtains Position data,
The operational part is also based on the position in addition to the posture based on Illumination Distribution and the user on the table Data calculate the light source position for reducing uneven illumination.
6. lighting device according to claim 5, it is characterised in that: further include warning portion, for working as the position data Described in user privileged site between desk at a distance to generate warning in specified value situation below.
7. lighting device according to claim 5, it is characterised in that:
The operational part seeks the viewpoint in the user based on the Illumination Distribution and the position data on the table The presumption Illumination Distribution detected on position is based on the presumption Illumination Distribution, and the even light source of uneven illumination can be reduced by calculating Position.
8. lighting device according to claim 5, it is characterised in that:
The position data refers to the position data of the privileged site of the upper part of the body of the user.
9. lighting device according to claim 7, it is characterised in that:
The position data refers to the position data of the privileged site of the upper part of the body of the user.
10. lighting device according to claim 8, it is characterised in that:
The position data of the privileged site of the upper part of the body of the user refers to the position data of the eyes of the user.
11. lighting device according to claim 9, it is characterised in that:
The position data of the privileged site of the upper part of the body of the user refers to the position data of the eyes of the user.
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